This is a water-adjustable water bag, perfect for home training. By filling it with water, you can efficiently train your core by utilizing the swaying of the water inside (shifting of the center of gravity). Free Load Adjustment: Depending on the amount of water, you can freely change the weight from approximately 5kg to a maximum of 30kg. Full Body Training: With handles, you can perform a variety of exercises such as squats, lunges, and presses with just this one item. Compact Storage: When not in use, you can drain the water and deflate it, folding it very small for storage and portability without taking up much space. Accessories: A dedicated pump for inflating is included. [Set Contents] Water bag body Dedicated air pump Please note that the shipping method may be changed between YuYu/RakuRaku Mercari便 and Eco-hai during shipping. Recycled packaging materials will be used for shipping. #training #strength training #core training #water bag #home training #exercise #diet 4